1. √(p/q)
2. √(q/p)
3. √(pq)
4. pq
√(q/p)
1. 12
2. 14
3. 25
4. 18
14
1. 1/2cos2θ
2. 0
3. -1/2cos2θ
4. 1/2
1/2cos2θ
1. 0
2. 1
3. -1
4. 4
0
1. only one solution
2. two solution
3. infinitely many solution
4. no solution
no solution
1. 60
2. 50
3. 40
4. 56
60
1. 1/15
2. 1/6
3. 1/5
4. 1/3
1/15
1. 3
2. 10
3. 15
4. 20
15
1. coth-1x
2. sinh-1x
3. -tanh-1x
4. tanh-1x
tanh-1x
1. log[y3/(2-y3)]
2. log[y3/(1-y3)]
3. log[2y3/(1-y3)]
4. log[y3/(1-2y3)]
log[y<sup>3</sup>/(1-2y<sup>3</sup>)]